JST Connectors and Solderless Terminals

JST connectors, solderless terminals, splices and application tooling for instrumentation, wire harness assembly and automation systems: selection by part number.

JST Wire-to-Board Connectors: XH, PH, ZH, GH and PA Series

Compact wire-to-board connectors with pitch from 0.8 to 2.5 mm for printed circuit boards. Vertical and right-angle headers, crimp socket housings and IDC options with positive locking mechanisms for industrial controllers and processing electronics.

Miniature contact pitch options: 0.8, 1.0, 1.25, 1.5, 2.0 and 2.5 mm
Headers designed for surface mount SMT and through-hole THT mounting
Positive locking systems with friction lock and retention latches
Polarized housing geometry preventing incorrect circuit mating

JST Wire-to-Wire Connectors: SM, RCY, EL and Sealed JWPF

Reliable wire-to-wire connectors for wire harnesses, inter-unit cabling and mobile connections. Including waterproof JWPF families with IP67 sealing, power EL housings and compact SM connectors with positive latches preventing accidental disconnection.

Waterproof JWPF designs providing IP67 ingress protection level
Free-hanging plug and receptacle housings with locking clips
Phosphor bronze contacts with tin plating against oxidation
High resistance to vibration stress and operating thermal cycles

JST Board-to-Board Connectors and FFC/FPC Flexible Headers

High-density board-to-board interconnects with pitch from 0.35 to 1.27 mm alongside FFC/FPC flexible circuit connectors with ZIF and Non-ZIF mechanisms. Providing miniature packaging for sensor modules, displays and processor boards in industrial units.

Ultra-fine contact pitch options: 0.35, 0.4, 0.5, 0.8 and 1.0 mm
Rotary and slide ZIF actuators with zero insertion force action
Low profile board stacking heights ranging from 0.9 to 3.5 mm
Gold-plated contact areas ensuring long-term signal integrity

JST Solderless Terminals and Splices: Ring, Fork and Disconnect Types

Comprehensive range of non-insulated and insulated crimp terminals for copper conductors from 0.1 to 325 mm². Featuring R-type ring tongues, Y-type fork terminals, quick disconnect tabs and butt splices available in loose piece or continuous chain forms.

Conductor cross-section span: 0.1 mm² to 325 mm² (AWG 26 to 500 MCM)
Available in loose piece format and continuous chain strip reels
Insulation options with vinyl, nylon and high-temperature sleeves
High electrical conductivity drawn from oxygen-free copper strip

JST Crimping Presses, Applicators and Tooling for Harness Production

Industrial processing equipment engineered for crimping continuous chain terminals and contacts. Semi-automatic AP-K2N presses alongside MKS-L and MK-L applicators featuring micrometer adjustment for wire and insulation crimp heights on assembly lines.

Applicator series MKS-L, MK-L and MKS-SC for end and side feed reels
Pneumatic and electromechanical presses delivering up to 20 kN force
Micrometric dial adjustment for wire crimp depth down to 0.01 mm
Interchangeable dies and punches machined from alloy tool steel

JST Cable Assemblies, Industrial Wire Harnesses and Hand Tools

Engineered cable assemblies and wiring harnesses built to customer drawings, paired with WC and YNT hand crimping tools for maintenance and prototype builds. Complete crimp geometry inspection, wire marking, tin dipping and thorough circuit testing.

Custom multi-core signal and power harness builds per customer specs
Manual hand tools WC-110, WC-240 with ratchet release mechanisms
Electrical continuity, short circuit and insulation resistance tests
Protective heat shrink tubing, braided sleeving and conduits

Design Principles and Contact Engineering of JST Interconnects

J.S.T. Mfg. Co., Ltd. has developed electrical interconnect components since 1957. The manufacturer portfolio covers wire-to-board, wire-to-wire and board-to-board configurations spanning contact pitch dimensions from 0.2 mm up to 16 mm.

Contact terminals are stamped from phosphor bronze and oxygen-free copper strip with protective tin plating or selective gold plating to reduce contact resistance and prevent surface oxidation.

Insulating housings are molded from self-extinguishing polyamides and polybutylene terephthalate meeting the UL94V-0 flammability classification.

Positive friction latches, inertia locking mechanisms and secondary terminal position assurance TPA retainers protect circuits from vibration and disengagement in harsh industrial equipment.

Part Number Identification and Selection by Pitch and Drawings

Selecting appropriate JST connectors requires the manufacturer part number, wiring schematic, contact pitch or clear component photos. The JST part numbering system designates series family, circuit count, mounting style and terminal configuration.

For example, in the XH series, straight through-hole headers are designated B2B-XH-A, right-angle headers are S2B-XH-A, crimp receptacle housings are XHP-2, and socket contacts are SXH-001T-P0.6.

When markings are unavailable, technical specialists identify components through physical dimensions, centerline spacing, polarizing key geometry and mounting interface footprint for surface mount SMT or through-hole THT printed circuit assembly.

Solderless Terminals, Crimp Lugs and In-Line Splices

The JST terminal lineup covers R-type ring tongues, Y-type fork terminals, pin terminals, quick disconnect tabs and in-line butt splices for conductor cross-sections from 0.1 to 325 mm² (AWG 26 to 500 MCM).

Terminals are stamped from high-conductivity electrolytic copper with electro-tin plating ensuring low contact resistance and environmental durability. Components are produced both as loose pieces for manual crimp pliers and on continuous chain reels for automated press equipment.

For demanding environments, insulated sleeves made of vinyl or nylon include a funnel entry interior that guides multi-strand copper wire without strand turn-back during insertion.

Crimping Presses, High-Precision Applicators and Hand Tools

Reliable termination of JST contacts relies on dedicated production tooling. High-volume harness assembly employs semi-automatic AP-K2N bench presses paired with quick-change MKS-L, MK-L and MKS-SC applicators configured for end-feed or side-feed terminal reels.

These applicators feature independent micrometric dials for separate conductor crimp height and insulation crimp adjustment calibrated in 0.01 mm increments.

For prototyping, field maintenance and bench testing, WC and YNT manual crimp pliers incorporate precision ground dies with a full-cycle ratchet mechanism that prevents incomplete crimp cycles by the operator.

Manufacturing Standards and Testing for Custom Cable Assemblies

Custom cable assembly fabrication using JST connectors adheres to international electrical assembly criteria under IPC/WHMA-A-620 guidelines.

Quality verification includes optical inspection of conductor strand containment, micrometric measurement of crimp height and width, and calibrated pull-force retention testing.

Completed wire harnesses undergo automated electrical testing verifying end-to-end continuity, pinout configuration, absence of short circuits and insulation resistance at designated test voltages, ensuring dependable performance within industrial power supplies, drives and automation controllers.

Industrial Operating Fields and Commercial Order Terms

JST interconnect products operate within industrial automation hardware, programmable logic controllers, frequency inverters, analytical instrumentation, uninterruptible power units, telecommunications infrastructure, medical electronics and robotics.

We manage technical component selection and quotation preparation for manufacturing facilities and maintenance organizations. International trade payments are settled via commercial bank transfer under formal invoice terms.

Deliveries are packaged with factory specifications, technical datasheets and shipped via scheduled freight forwarders with consistent tracking to designated project destinations.

JST and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of JST and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.